Update README.md

README.md

@@ -56,7 +56,7 @@ Band order is Near Infrared, Red, Green, Blue. for convenience, the Lidar point
 
 Lidar points clouds            |  Aerial imagery
 :-------------------------:|:-------------------------:
-![]()  |  ![]()
+![](./imagery_18_classes.png)  |  ![](./lidar_18_classes.png)
 
 
 ## Citation